How many sewing machines is to many?

Okay I admit it I can,t turn down a bargain on a good machine. Yesterday I had 30 minutes before I needed to be leaving for work after running several errands. SOOOOOOO what would a quilter that has 13 machines already, do? Yes in dee de , I went to a thrift store. IT WASN,T my fault. It fallowed me home. I found a Bernina 730 record with 10 feet and the tray that swings around. Oh my it was $24.95. I almost fainted. It was made in 1968 and I am having it cleaned and beautified this Friday one day service. I can,t wait to play on it.